Nut-lock.



(NoMbdeL) No. name. Patented Dec. :6, 1902.

A. A. & E. L. GOLDEN.

NUT LOCK.

(Applicatxon filed May 2, 1902 l mmmmmlllllllllfl UNITED STATES OFFICE.

' ATENT ARVILLE A. GOLDEN AND EMMA L. GOLDEN, OF EAST LIVERPOOL, OHIO.

NUT-LOCK.

SPECIFICATION forming part off-Letters Patent No. 716,218, datedDecember 16, 190.2.

Application filed May 2; 1902. Serial No. 105,623. (No model.)

I atZZ whom it mag/concern.-

Be it known that we, ARVILLE A. GOLDEN and EMMA L. GOLDEN, citizens ofthe United States, residing at East Liverpool, in the county ofColnmbiana and State of Ohio, have invented certain new and usefulImprovements in Nut-Locks; and we do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and to thefigures of reference marked thereon, which form a part of thisspecification.

This invention relates to nut-locks, and particularly to that classthereof in which the locking engagement is effected by a key or pin.

The object of the invention is to form an improved nut-lock of the classdescribed, and an embodiment of the invention is hereinafter described,and is illustrated in the accompanying drawings, in which- Figure 1 is aplan of the bolt. Fig. 2 is a top view of the nut. Fig. 3 is aperspective view showing the nut and bolt together with the locking-keyin position.

Referring specifically to the drawings, the bolt is indicated at 6 andis double-threaded with opposite threads, (indicated at 6 and 6".) Thethread carrying the bolt, which in this instance is the right-handthread 6,is first formed and is then cut across or mutilated by a deeperleft-hand thread 6 At the] crossing of the threads the body of the mainor right-hand thread is cut away by the lefthand groove, formingopenings or recesses to receive the tangential key 7, carried by the nut8. When the key is inserted in the space formed at the crossing of therespective threads,attempted loosening of the nut causes the key to bindbetween the threads of the nut and the bolt. It is evident that the nutthe reverse or left-hand thread simply forms by cutting away portions ofthe right-hand thread recesses into which the key can be entered.

The key is preferably formed of wire looped over a headed pin 8 and isseated in a recess 8", formed in the top of the nut. This recess is deepenough to extend below the first thread of the nut, so that the key canbe entered thereunder.

It is evident that the key need not be attached to the nut, as with abolt and nut so formed any small piece or nail entered into the recessformed at the crossing of the threads will bind against the threads andlock the nut.

The loop in the key is long enough to permit the necessary tangentialmovement thereposite threads one of which is cut deeper than the other,a nut, and a key carried by the nut inserted in the recess formed at acrossing of the threads.

3." A nut-lock comprising a bolt having opposite crossed threads, a nuthaving a recess leading to one of its threads, anda key carried in therecess and adapted to enter between the nut and bolt into the recessformed at the crossing of the threads of the bolt.

In testimony whereof we affix our signatures in presence of twowitnesses. ARVILLE A. GOLDEN. EMMA L. GOLDEN. Witnesses:

FRED GRIM, J AS. N. RAsE.

